<template>
  <div>
    <!-- 面包屑导航区 -->
  <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>用户管理</el-breadcrumb-item>
    <el-breadcrumb-item>用户列表</el-breadcrumb-item>
  </el-breadcrumb>


  <!-- 卡片视图区 -->
<el-card>
  <!-- 搜索与添加区 -->
  <el-row :gutter='20'>
    <el-col :span='8'>
      <el-input placeholder="请输入内容" v-model='queryInfo.query' clearable @clear='getUserList'>
    <el-button slot="append" icon="el-icon-search" @click='getUserList'></el-button>
  </el-input>
    </el-col>
    <!-- 添加用户按钮 -->
    <el-col :span='4'>
      <el-button type='primary' @click='addDialogVisible=true'>添加用户</el-button>
    </el-col>
  </el-row>


<!-- 用户列表区 -->
<el-table :data='userlist' border stripe>
  <el-table-column label='#' type=index></el-table-column>
  <el-table-column label='姓名' prop='username'></el-table-column>
  <el-table-column label='邮箱' prop='email'></el-table-column>
  <el-table-column label='电话' prop='mobile'></el-table-column>
  <el-table-column label='角色' prop='role_name'></el-table-column>
  <el-table-column label='状态'>
    <template v-slot:default='scope'>
    <el-switch
      v-model="scope.row.mg_state" @change='userStateChanged(scope.row)'
     >
   </el-switch>
    </template>
  </el-table-column>
  <el-table-column label='操作' width='180px'>
    <template v-slot='scope'>
      <!-- 修改按钮 -->
        <el-button type="primary" icon="el-icon-edit" size='mini'  @click='showEditDialog(scope.row.id)'></el-button>
        <!-- 删除按钮 -->
        <el-button type="danger" icon="el-icon-delete" size='mini' @click='removeUserById(scope.row.id)'></el-button>
        <!-- 分配角色按钮 -->
        <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
        <el-button type="warning" icon="el-icon-setting" size='mini' @click="setRole(scope.row)"></el-button>
        </el-tooltip>
    </template>
  </el-table-column>
</el-table>

<!-- 分页区域 -->
<el-pagination
     @size-change="handleSizeChange" 
     @current-change="handleCurrentChange" 
     :current-page="queryInfo.pagenum" 
     :page-sizes="[1, 2, 5, 10]" 
     :page-size="queryInfo.pagesize" 
     layout="total, sizes, prev, pager, next, jumper" 
     :total="total">
</el-pagination>
</el-card>

<!-- 添加用户的对话框 -->
<el-dialog
  title="添加用户"
  :visible.sync="addDialogVisible"
  width="50%"
  @close="addDialogClosed"
  >
  <!-- 内容主体区域 -->
  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
  <el-form-item label="用户名" prop="username">
    <el-input v-model="addForm.username"></el-input>
  </el-form-item>
  <el-form-item label="密码" prop="password">
    <el-input v-model="addForm.password"></el-input>
  </el-form-item>
  <el-form-item label="邮箱" prop="email">
    <el-input v-model="addForm.email"></el-input>
  </el-form-item>
  <el-form-item label="手机" prop="mobile">
    <el-input v-model="addForm.mobile"></el-input>
  </el-form-item>
  </el-form>
  <!-- 底部区域 -->
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
</el-dialog>

<!-- 修改用户的对话框 -->
<el-dialog
  title="修改用户"
  :visible.sync="editDialogVisible"
  width="50%"
  @close="editDialogClosed"
  >
  <el-form 
  :model="editForm"
  :rules="editFormRules"
  ref="editFormRef"
  label-width="70px">
  <el-form-item label="用户名">
    <el-input v-model="editForm.username" disabled></el-input>
  </el-form-item>
  <el-form-item label="邮箱" prop='email'>
    <el-input v-model="editForm.email"></el-input>
  </el-form-item>
  <el-form-item label="手机" prop='mobile'>
    <el-input v-model="editForm.mobile"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo" >确 定</el-button>
  </span>
</el-dialog>
<!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
 name:'Users',
 data(){
   //验证邮箱的规则
   var checkEmail=(rule,value,cb)=>{
     //验证邮箱额度正则表达式
     const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
     if(regEmail.test(value)){
       //合法的邮箱
       return cb()
     }
     cb(new Error('请输入合法的邮箱'))
     }
   //验证手机号的规则
   var checkMobile=(rule,value,cb)=>{
     //验证手机号的正则表达式
     const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
     if(regMobile.test(value)){
       return cb()
     }
     cb(new Error('请输入合法的手机号'))
   }
   return{
     //获取用户列表的参数对象
     queryInfo:{
       query:'',
       //当前的页数
       pagenum:1,
       //当前每页显示多少条数据
       pagesize:2
     },
     userlist:[],
     total:0,
     //控制用户对话框的显示与隐藏
     addDialogVisible:false,
     //添加用户的表单数据
     addForm:{
       username:"",
       password:"",
       email:"",
       mobile:""
     },
     //添加表单的验证规则对象
     addFormRules:{
       username:[
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在 3 到 10 个字符', trigger: 'blur' }
       ],
       password:[
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '用户名的长度在 6 到 15 个字符', trigger: 'blur' }
       ],
       email:[
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {validator:checkEmail,trigger:'blur'}
       ],
       mobile:[
          { required: true, message: '请输入手机号', trigger: 'blur' },
          {validator:checkMobile,trigger:'blur'}
       ]
     },
    //  控制修改用户对话框的显示与隐藏
     editDialogVisible:false,
     //查询到的用户信息对象
     editForm:{
     },
     //修改表单的验证规则对象
     editFormRules:{
       email:[{ required: true, message: '请输入用户的邮箱', trigger: 'blur' },
       {validator:checkEmail,trigger:'blur'}
       ],
       mobile:[{ required: true, message: '请输入用户的手机号', trigger: 'blur' },
          {validator:checkMobile,trigger:'blur'}]
     },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''
   }
 },
 created() {
   this.getUserList()
 },
 methods:{
async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听switch状态的改变
    async userStateChanged(userinfo){
      console.log(userinfo);
      const{data:res}=await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if(res.meta.status!==200){
        userinfo.mg_state=!userinfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功!')
    },
    //监听用户对话框的关闭事件
    addDialogClosed(){
       this.$refs.addFormRef.resetFields()
    },
    //点击按钮，添加新用户
    addUser(){
     this.$refs.addFormRef.validate(async valid=>{
       if(!valid) return
       //可以发起添加用户网络请求
       const{data:res}= await this.$http.post('users',this.addForm)
       if(res.meta.status!=201) {
         this.$message.error('添加用户失败')
       }else{
         this.$message.success('添加用户成功')
       //隐藏添加用户的对话框
       this.addDialogClosed=false
       //重新获取用户的列表
       this.getUserList()
       }
       //展示用户编辑的对话框
     })
    },
 async showEditDialog(id) {
      // console.log(id)
      const { data: res } = await this.$http.get('users/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }

      this.editForm = res.data
      this.editDialogVisible = true
    },
    //监听修改事件对话框关闭事件
    editDialogClosed(){
         this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo(){
       this.$refs.editFormRef.validate(async valid=>{
         if(!valid) return
         //发起用户信息的数据请求
        const {data:res}=await this.$http.put('users/'+this.editForm.id,
        {
           email:this.editForm.email,
           mobile:this.editForm.mobile
         }
         )
         if(res.meta.status!==200){
             this.$message.error('更新用户信息失败')
           }else{
            //  关闭对话框
            this.editDialogVisible=false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
             this.$message.success('更新用户信息成功')
           }
       })
    },
    // 删除用户信息
    async removeUserById(id){
      //弹框询问用户是否删除数据
     const confirmResult=await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        //如果用户点击删除的话返回值为字符串confirm
        //如果用户取消了删除则返回值为字符串cancel
        // console.log(confirmResult);
        if(confirmResult!='confirm'){
          return this.$message.info('已取消删除')
        }
       const {data:res}= await this.$http.delete('users/'+id)
       if(res.meta.status!=200){
         return this.$message.error('删除用户失败!')
       }else[
         this.$message.success('删除用户成功!'),
         this.getUserList()
       ]
    },
   // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolesList = res.data

      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }

      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }

      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
 }
}
</script>

<style lang='less' scoped>

</style>